TABLE 3. Bivariate and multiple analysis, with risk ratios (RRs) and 95% confidence interval (CIs), between clinical markers and persistent arthralgia at 6 months from laboratory-positive Chikungunya infection, Mexico, 2015.
Clinical markers |
Bivariate analysis |
Multiple analysis |
||||
|---|---|---|---|---|---|---|
RR |
95(%)CI |
P |
RRa |
95(%)CI |
P |
|
Sex | ||||||
Male |
1.00 |
1.00 |
|
|||
Female |
1.47 |
0.90–2.39 |
0.121 |
1.20 |
0.77–1.89 |
0.416 |
Age (years) | ||||||
< 40 |
1.00 |
1.00 |
|
|||
> 40 |
1.60 |
1.04–2.45 |
0.032 |
1.60 |
1.03–2.48 |
0.037 |
Sites (no.) of articular pain at acute disease | ||||||
> 8 |
1.00 |
1.00 |
|
|||
< 8 |
1.44 |
0.97–2.13 |
0.072 |
1.24 |
0.88–1.74 |
0.225 |
Articular effusion (any site) at acute disease | ||||||
No |
1.00 |
1.00 |
|
|||
Yes |
1.59 |
0.85–2.96 |
0.146 |
1.44 |
0.76–2.71 |
0.260 |
Length (days) of severe articular pain at acute disease |
1–14 |
1.00 |
1.00 |
|
||
15–30 |
1.69 |
1.02–2.79 |
0.042 |
1.27 |
0.79–2.05 |
0.319 |
> 30 |
1.36 |
0.86–2.14 |
0.187 |
0.89 |
0.60–1.32 |
0.557 |
Arthralgia (any site) at 3 months from acute disease | ||||||
No |
1.00 |
1.00 |
|
|||
Yes |
4.29 |
2.10–8.75 |
< 0.001 |
3.95 |
1.95–8.01 |
< 0.001 |
History of ≤ 1 chronic diseaseb | ||||||
No |
1.00 |
1.00 |
|
|||
Yes |
1.38 |
0.93–2.04 |
0.108 |
1.13 |
0.68–1.88 |
0.648 |
Source: This table was prepared by the authors from the results of research.
The relative risks from multiple analysis are adjusted by the variables listed in the table.
Chronic disease = type 2 diabetes mellitus, arterial hypertension, or osteoarthritis.